Climatological Report (Monthly)
Issued by NWS Sterling, VA

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CXUS51 KLWX 012122 RRA
CLMBWI

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
522 PM EDT FRI SEP 1 2017

...................................

...THE BALTIMORE MD CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             105   08/20/1983
                        08/07/1918
                        08/06/1918
 LOW               45   08/30/1986
HIGHEST            92   08/22        95      -3
                        08/18
LOWEST             56   08/28        54       2
AVG. MAXIMUM     82.9              85.1    -2.2     89.1
AVG. MINIMUM     64.2              65.2    -1.0     69.2
MEAN             73.5              75.1    -1.6
DAYS MAX >= 90      4               6.5    -2.5
DAYS MAX <= 32      0               0.0     0.0
DAYS MIN <= 32      0               0.0     0.0
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        18.35   1955
 MINIMUM         0.64   1877
TOTALS           4.60              3.29    1.31     3.96
DAILY AVG.       0.15              0.11    0.04
DAYS >= .01        13               8.6     4.4
DAYS >= .10         8               5.7     2.3
DAYS >= .50         5               2.2     2.8
DAYS >= 1.00        0               0.7    -0.7
GREATEST
 24 HR. TOTAL    0.76   08/29 TO 08/29
                        08/15 TO 08/15

DEGREE_DAYS
HEATING TOTAL       0                 1      -1        0
 SINCE 7/1          0                 1      -1        0
COOLING TOTAL     272               316     -44      448
 SINCE 1/1       1092              1010      82     1267
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              4.7
HIGHEST WIND SPEED/DIRECTION    28/310    DATE  08/19
HIGHEST GUST SPEED/DIRECTION    39/320    DATE  08/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             21
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       9
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      1
HAZE                      2

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

BALTIMORE MD...BALTIMORE-WASHINGTON INTERNATIONAL THURGOOD
MARSHALL AIRPORT...

THE MONTHLY AVERAGE TEMPERATURE WAS BELOW NORMAL. MONTHLY
RAINFALL WAS ABOVE NORMAL.

NO DAILY TEMPERATURE OR PRECIPITATION RECORDS WERE SET LAST MONTH.

CLIMATE RECORDS FOR THE BALTIMORE MD AREA HAVE BEEN KEPT AT
BALTIMORE-WASHINGTON INTERNATIONAL THURGOOD MARSHALL AIRPORT SINCE
1950. ADDITIONAL TEMPERATURE RECORDS OBSERVED DOWNTOWN EXTEND BACK
TO JULY OF 1872. PRECIPITATION RECORDS EXTEND BACK TO JANUARY OF
1871. SNOWFALL RECORDS BEGAN IN MARCH OF 1892.

ALL CLIMATE DATA ARE CONSIDERED PRELIMINARY UNTIL REVIEWED BY THE
NATIONAL CENTERS FOR ENVIRONMENTAL INFORMATION (NCEI).

$$

DH/CAS/WOODY!



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